Unable to open database error

Unable to open database error

Had one of my users get an error after doing the latest MS security update this morning for Win10 pro. Upon trying to load the database it would throw up the unable to load database error. Once I rolled back the updates from this morning he was able to open the database, so something in the latest update is killing 19.1, my plan of action is to update him to 19.2 this afternoon and redownload the latest updates and see if I still get the problem.